Interventional Cancer Treatment

Interventional cancer treatment refers to minimally invasive procedures performed under imaging guidance. Using catheters, needles, or other devices, physicians can reach a tumor or its blood supply and deliver local treatment while limiting damage to surrounding healthy tissue.

Interventional procedures are mainly used for solid tumors. Depending on the approach, treatment may involve delivering drugs through tumor-feeding blood vessels, blocking the tumor's blood supply, or directly destroying tumor tissue through ablation. Interventional techniques can also be used to manage cancer-related complications such as bleeding, obstruction, or fluid buildup.

Interventional treatment is commonly used for liver cancer and may also be considered for selected patients with lung cancer, kidney cancer, or metastatic tumors.

For example, some patients with liver cancer may undergo transarterial chemoembolization (TACE). Selected small, localized tumors in the liver, lungs, or kidneys may be treated with local ablation techniques such as radiofrequency ablation, microwave ablation, or cryoablation.

Interventional procedures such as drainage, stent placement, or vascular embolization may also be used to relieve complications caused by cancer, including biliary obstruction, vascular obstruction, bleeding, or fluid buildup.

Whether an interventional procedure is appropriate depends on the cancer type, tumor size, number and location of lesions, disease stage, organ function, and overall health.

Before treatment, imaging such as CT, MRI, or ultrasound is usually used to determine the tumor's size, location, and relationship to nearby blood vessels and organs. Blood counts, blood-clotting tests, and liver and kidney function may also be assessed.

For vascular procedures, a catheter is inserted through a blood vessel and guided to the target area, where medications or embolic materials can be delivered. For local ablation, a needle-like device is placed directly into the tumor, and heat, freezing, or another form of energy is used to destroy tumor tissue.

The type of anesthesia, treatment time, and hospital stay vary by procedure. Follow-up imaging and laboratory tests may be used to assess treatment response and identify complications.

The risks of interventional treatment depend on the treatment site, procedure, tumor size, and the patient's overall health. Possible complications include pain or bleeding at the puncture site, infection, fever, and injury to nearby tissues.

After transarterial treatment of liver tumors, some patients may develop post-embolization syndrome, which can include fever, pain, nausea, and fatigue. Ablation may cause bleeding, infection, or injury to nearby organs. Procedures involving contrast agents may also carry risks such as allergic reactions or effects on kidney function.

Interventional treatment is not appropriate for every patient and does not simply replace surgery or systemic cancer therapy. Its role should be determined as part of the patient's overall treatment plan.